Dressed Interference in Giant Superatoms: Entanglement Generation and Transfer

Area of Science:

• Quantum physics
• Atomic physics
• Quantum information science

Background:

• Superatoms offer unique quantum properties.
• Waveguide-coupled systems are crucial for quantum technologies.
• Controlling entangled states is key for quantum information processing.

Purpose of the Study:

• Introduce and explore the quantum dynamics of giant superatoms (GSAs).
• Investigate decoherence-free transfer and swapping of entangled states using braided GSAs.
• Demonstrate selective, directional quantum information transfer and remote entanglement generation via engineered coupling phases.

Main Methods:

• Theoretical modeling of interacting atoms coupled to a waveguide.
• Analysis of quantum dynamics for braided and separate GSAs.
• Engineering of coupling phases to control quantum emission.

Main Results:

• Braided GSAs facilitate decoherence-free transfer and swapping of internal entangled states.
• Engineered coupling phases in separate GSAs lead to state-dependent chiral emission.
• Selective, directional quantum information transfer is achieved.
• Remote generation of W-class entangled states is facilitated.

Conclusions:

• Giant superatoms provide a novel platform for robust quantum information processing.
• Engineered chiral emission offers a pathway for directed quantum communication.
• The proposed mechanisms hold significant potential for advancing quantum networks and quantum computing.